/**
 * 金额格式化
 *
 * @param src
 * @param pos
 * @returns {string}
 */
function formateFloat(src, pos) {
  var num = parseFloat(src).toFixed(pos);
  num = num.toString().replace(/\$|\,/g, "");
  if (isNaN(num)) num = "0";
  var sign = num == (num = Math.abs(num));
  num = Math.floor(num * 100 + 0.50000000001);
  var cents = num % 100;
  num = Math.floor(num / 100).toString();
  if (cents < 10) cents = "0" + cents;
  for (var i = 0; i < Math.floor((num.length - (1 + i)) / 3); i++)
    num =
      num.substring(0, num.length - (4 * i + 3)) +
      "," +
      num.substring(num.length - (4 * i + 3));
  return (sign ? "" : "-") + num + "." + cents;
}

/**
 * 金额格式化
 *
 * @param src
 * @param pos
 * @returns {string}
 */
function formateDX(n) {
  var fraction = ["角", "分"];
  var digit = ["零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"];
  var unit = [
    ["元", "万", "亿"],
    ["", "拾", "佰", "仟"]
  ];
  var head = n < 0 ? "欠" : "";
  n = Math.abs(n);
  var s = "";
  for (var i = 0; i < fraction.length; i++) {
    s += (
      digit[Math.floor(n * 10 * Math.pow(10, i)) % 10] + fraction[i]
    ).replace(/(零.)+/, "");
  }
  s = s || "整";
  n = Math.floor(n);
  for (var i = 0; i < unit[0].length && n > 0; i++) {
    var p = "";
    for (var j = 0; j < unit[1].length && n > 0; j++) {
      p = digit[n % 10] + unit[1][j] + p;
      n = Math.floor(n / 10);
    }
    s = p.replace(/(零.)*零$/, "").replace(/^$/, "零") + unit[0][i] + s;
  }
  return (
    head +
    s
      .replace(/(零.)*零元/, "元")
      .replace(/(零.)+/, "零")
      .replace(/^整$/, "零元整")
  );
}

export default {
  formateFloat,
  formateDX
};
